catalyst modifier in certain organic oxidation reactions; and colorimetric analysis of sulfite ion in aqueous samples. In the chemical industry, sulfur dioxide is used as a reducing agent in a number of preparative and analytical reactions. Liquid sulfur dioxide is used as a solvent for sulfur trio...
Further oxidation of SO2, usually in the presence of a catalyst such as NO2, forms H2SO4, and thus acid rain.[2] Sulfur dioxide emissions are also a precursor to particulates in the atmosphere. Both of these impacts are cause for concern over the environmental impact of these fuels. ...
A large number of different substrates could be used in the processes described, thus illustrating the potential of our reaction for the generation of diversity within the attractive alpha-amino carbonyl framework. Furthermore, a novel cyclic amidine was obtained from the reaction of acetyl cyanide ...
(calcium sulfate dihydrate, CaSO4∙2H2O) andbarite(barium sulfate, BaSO4). The sulfide ores are valued chiefly for their metal content, although a process developed in the 18th century for making sulfuric acid utilized sulfur dioxide obtained by burning pyrite. Coal,petroleum, andnatural gas...
their combustion generates sulfur dioxide unless the sulfur compounds are removed before burning the fuel. Further oxidation of SO2, usually in the presence of a catalyst such as NO2, forms H2SO4, and thus acid rain.[2] Sulfur dioxide emissions are also a precursor to particulates in ...
Oxidation of sulfur dioxide to sulfur trioxide over honeycomb DeNoxing catalysts A systematic study addressing the effects of the operating conditions (contact time, temperature), of feed composition (O2, SO2, H2O, NH3, NO(x), NH3 + NO(x), concentrations), and of catalyst design parameters (...
The anodic oxidation of sulfur dioxide as a function of sulfuric acid concentration, temperature and pressure was studied. Measurements demonstrate that the sulfuric acid concentration should be lower than about 60 weight % in order to obtain a reasonable catalysis of anodic sulfur dioxide oxidation. ...
The biggest source of air pollution is the combustion of fossil fuels, where pollutants such as particulate, sulfur dioxide (SO2), nitrogenoxides (NOx), and volatile organic compounds (VOC) are emitted. Among these pollutants, sulfur dioxide plays the main role in acidification of the environment...
Heterotrophic activity, primarily driven by sulfate-reducing prokaryotes, has traditionally been linked to nitrogen fixation in the root zone of coastal marine plants, leaving the role of chemolithoautotrophy in this process unexplored. Here, we show tha
The catalytic oxidation of ethylbenzene with sulfur dioxide gives styrene in high yields (90% selectivity at 95% ethylbenzene conversion) over a number of catalysts. Catalyst activity declines due to coke formation but activity can be re... CR Adams,TJ Jennings - 《Journal of Catalysis》 被引量...